Waterside economizer heat exchanger fouling can lead to significant operational cost for the owner of the commercial chilled water system. The water side economizer system …
Water Side Economizers Part 9: Heat Exchanger Pressure Drop
The water side economizer pressure drop is an important point for the engineer to consider. The ASHRAE 90.1-2013 energy standard requires the pressure drop of …
Water Side Economizers Part 8: The Heat Exchanger Approach
The gasketed plate heat exchanger and the capacities it should be scheduled at is the subject of today’s blog. The first seven parts of this …
Waterside Economizers Part 7: Tower Side Temperatures
The waterside economizer is normally a gasketed plate heat exchanger. There is chilled water on one side and cooling tower water on the other side …
Waterside Economizers Part 6: Tower Side Flow Rate
The waterside economizer is normally a gasketed plate heat exchanger. There is chilled water on one side and cooling tower water on the other side …
Waterside Economizers Part 5: Heat Exchanger Location
The waterside economizer is normally a gasketed plate heat exchanger. The cooling tower water supply temperature to this heat exchanger varies with the weather. The …
Water Side Economizers Part 4: Chilled Water Temperatures
Waterside economizers per ASHRAE 90.1-2013 and 2010 shall provide up to 100% of the expected system cooling load at outdoor air temperatures of 50°F dry …
Water Side Economizers Part 3: Cooling Tower Temperatures
Many northern state energy codes require economizers for chilled water systems. Waterside economizers per ASHRAE 90.1-2013 and 2010 shall provide up to 100% of the …
Water-Side Economizers Part 2: State Energy Codes
Water-Side economizers are here to stay in the northern climates. Using the cooling tower to create cold water and transferring that temperature to the chilled water …
Free Cooling Heat Exchangers (Part One)
The ASHRAE young engineers heard about the free cooling system in the recent tour of the DTE Vantage Dearborn Central Energy Plant. The free cooling …